Data specifications

This analysis was conducted by the CONCORD-2 Programmer, as a sub-analysis of the CONCORD-2 study that was funded by the Canadian Partnership Against Cancer. Details on methodologies for calculating survival were published in The Lancet in 2015 (http://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736%2814%2962038-9.pdf). For specific details related to the survival by income quintile analysis, please refer to the methods section in this special feature section.